Edit 02.02.2006: It seems to me that they recently (as shown in this Google Groups discussion ) duplicated their whole notebook category and sub-categories, in a 100% similar category, by replacing only the word “notebook” with the word “laptop”, in the new laptop category. This too might be one of the reasons for their website banning.

As always, i really want to warn the owners of the websites that currently have site-wide links towards the online store Insoft, about removing their links. Websites that link to other penalised/banned websites, can at their own turn, be penalised or banned.

As for the theory that “someone who hates me, banned my site somehow” , here is the answer from Google Webmaster Facts :

Fiction: A competitor can ruin a site’s ranking somehow or have another site removed from Google’s index.

Fact: There’s almost nothing a competitor can do to harm your ranking or have your site removed from our index. Your rank and your inclusion are dependent on factors under your control as a webmaster, including content choices and site design.

Usually they provide a motive for banning. Lately they even warn publishers. So your clients must’ve had click fraud or something similar. If gour of your client were banned together, it must mean that you used tehniques outside of the Adsense TOS boundaries.

I don’t believe in google measures even for one second, i saw spamers been in the first position( first page) for years, and maybe good and real content site on the 10-15th page. I’ve made a real semantic and normal site with normal content a week away was good positioned and now after “good” changes in google algorithms this site is on the 4th page and spamers with hundreds of indoor pages are on the first page…so i don’t think that real web content with semantic tags and everything is a guarantee for a good position, and that’s because this changes…i think google became something like Microsoft…and this is not good…all web masters are “dancing” by the Google rules…